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Smokey_Lew's avatar
Smokey_Lew
Explorer
May 10, 2013

"P" tire designation vs. "LT"

I bought a new Ram 1500 in 2011 that came with Goodyear Wrangler HP tires. The tires are P275/60R20 and I have only 15k miles on them. My question has to do with the "P" designation which I understand stands for passenger car tire size.

I tow an older 25' Komfort TT that is definatly not in the lite catigory. It's not the perfect match for my truck but so far I haven't had a problem but I am worried that I might be pushing things with these tires. I hate to switch them out sinse they are low mileage and it would cost near a grand to replace with "LT" tires.

Ideally, I would like to wear them out a bit before purchasing LT tires but I want to be as safe as possible and not take unessary risks while on the road towing. I inflate them to the max tire pressure of 44 lbs. before hitting the road with the TT. They are rated at 2601 lbs at 44 psi. Any thoughts?
  • The oem tires will allow the truck to pull and carry the full rating.
    40/44 psi is fine and the door sticker number is also fine.
  • My opinion is that as long as the tires are well within the weight rating of your truck when loaded, and as long as the rig handles well on the road, then I would keep them until ready to be replaced. I would keep them aired up to near or at the max sidewall pressure for stiffness when towing and keep an eye on the tread to make sure you are not over pressuring them and causing undo wear.
    I do not think you would be unsafe using the stock tires as long as handling is good.
    Barney